well i made a dpf delete pipe for a guy the other day put it on with the ppe installed and put all the sensers back in the pipe it went well for about 2 days and went into regeneration and now will not come out we are going to put the dpf back on and probably have to take it to the dealer to have the ecm flashed i don't no what the trick is but we are going to try and find out will let you when it happens
